How many electrons can exist in the 12th energy level?

288

Explanation:

2(x^2)

X = the number of the energy level (which would be 12 in this case)

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

wher is the rest of the question